Commitments and contingencies (Tables)

3 Months Ended

Mar. 31, 2024

Commitments and contingencies.

Schedule of Changes in Accrued Environmental Remediation and Related Costs

	Amount
	(In thousands)
Balance at the beginning of the period	$	91,106
Additions charged to expense, net		170
Payments, net		(329)
Balance at the end of the period	$	90,947
Amounts recognized in the Condensed Consolidated Balance Sheet at the end of the period:
Current liability	$	1,584
Noncurrent liability		89,363
Balance at the end of the period	$	90,947